/*
 * Copyright (c) 2018, hiwepy (https://github.com/hiwepy).
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package hitool.web.servlet.filter;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public abstract class AbstractAccessControlFilter extends AbstractPathMatchFilter {
	
	@Override
	protected boolean onPreHandle(ServletRequest request, ServletResponse response) throws Exception {
		if(isAccessAllowed(request, response)){
			return true;
		}
		onAccessDeniad(request, response);
		return false;
	}
	
	/*
	 * 判断是否允许访问
	 */
	protected abstract boolean isAccessAllowed(ServletRequest request,ServletResponse response);
	
	/*
	 * 当访问被禁止是，需要做的操作
	 */
	protected abstract void onAccessDeniad(ServletRequest request,ServletResponse response);
	
}
